Unknown hoses

[Canadan99]

I was dealing with a black water tank issue and while looking under the trailer I noticed two hoses sticking out of the bottom of the trailer that I hadn’t noticed before. They are under the area where the tub/shower is located but they are not labelled in any way.

While trying to deal with my black water tank issue I was looking online for a plumbing diagram but of course they don’t provide those anywhere. Anyone know what they may be for?

[Javi]

Most likely low point drains

[sourdough]

Although you post no specifics about the trailer, would those not be your low point drains?

[chuckster57]

X3 low point drains. They will drain the water out of your fresh water system if you open the faucets. It will NOT drain the fresh water tank, it has a seperate drain.

[CWtheMan]

Your low point drain valves are explained in the generic owner's manual starting on page 63.

I highly recommend Sanitizing the Fresh Water System yearly as described in the owner's manual.

I also recommend purchasing extra drain line plastic caps. Because of their location they often - four times - got knocked off our trailer by road trash flying-up and hitting them.

https://keystone-rv-dealer-app.cdn.p...ers-manual.pdf